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  <div class="section" id="s-model-form-functions">
<span id="model-form-functions"></span><h1>模型表单函数<a class="headerlink" href="#model-form-functions" title="永久链接至标题">¶</a></h1>
<p>模型表单 API 参考。关于模型表单的介绍材料，请参见 <a class="reference internal" href="../../topics/forms/modelforms.html"><span class="doc">从模型创建表单</span></a> 主题指南。</p>
<span class="target" id="module-django.forms.models"></span><div class="section" id="s-modelform-factory">
<span id="modelform-factory"></span><h2><code class="docutils literal notranslate"><span class="pre">modelform_factory</span></code><a class="headerlink" href="#modelform-factory" title="永久链接至标题">¶</a></h2>
<dl class="function">
<dt id="django.forms.models.modelform_factory">
<code class="descname">modelform_factory</code>(<em>model</em>, <em>form=ModelForm</em>, <em>fields=None</em>, <em>exclude=None</em>, <em>formfield_callback=None</em>, <em>widgets=None</em>, <em>localized_fields=None</em>, <em>labels=None</em>, <em>help_texts=None</em>, <em>error_messages=None</em>, <em>field_classes=None</em>)<a class="headerlink" href="#django.forms.models.modelform_factory" title="永久链接至目标">¶</a></dt>
<dd><p>为给定的 <code class="docutils literal notranslate"><span class="pre">model</span></code> 返回一个 <a class="reference internal" href="../../topics/forms/modelforms.html#django.forms.ModelForm" title="django.forms.ModelForm"><code class="xref py py-class docutils literal notranslate"><span class="pre">ModelForm</span></code></a> 类。你可以选择性地传递一个 <code class="docutils literal notranslate"><span class="pre">form</span></code> 参数作为构建 <code class="docutils literal notranslate"><span class="pre">ModelForm</span></code> 的起点。</p>
<p><code class="docutils literal notranslate"><span class="pre">fields</span></code> 是一个可选的字段名列表。如果提供，返回的字段中只包括命名的字段。</p>
<p><code class="docutils literal notranslate"><span class="pre">exclude</span></code> 是一个可选的字段名列表。如果提供了这个列表，指定的字段将被排除在返回的字段之外，即使这些字段被列在 <code class="docutils literal notranslate"><span class="pre">fields</span></code> 参数中。</p>
<p><code class="docutils literal notranslate"><span class="pre">formfield_callback</span></code> 是一个可调用的函数，它接收一个模型字段并返回一个表单字段。</p>
<p><code class="docutils literal notranslate"><span class="pre">widgets</span></code> 是一个映射到部件的模型字段名的字典。</p>
<p><code class="docutils literal notranslate"><span class="pre">localized_fields</span></code> 是一个应本地化的字段名称列表。</p>
<p><code class="docutils literal notranslate"><span class="pre">labels</span></code> 是一个映射到标签的模型字段名的字典。</p>
<p><code class="docutils literal notranslate"><span class="pre">help_texts</span></code> 是一个映射到帮助文本的模型字段名的字典。</p>
<p><code class="docutils literal notranslate"><span class="pre">error_messages</span></code> 是一个模型字段名的字典，映射到错误信息的字典。</p>
<p><code class="docutils literal notranslate"><span class="pre">field_classes</span></code> 是映射到表单字段类的模型字段名的字典。</p>
<p>见 <a class="reference internal" href="../../topics/forms/modelforms.html#modelforms-factory"><span class="std std-ref">ModelForm的工厂函数</span></a> 的用法示例。</p>
<p>你必须通过关键字参数 <code class="docutils literal notranslate"><span class="pre">fields</span></code> 或 <code class="docutils literal notranslate"><span class="pre">exclude</span></code> 或表单内部 <code class="docutils literal notranslate"><span class="pre">Meta</span></code> 类的相应属性，明确地提供字段列表。更多信息参见 <a class="reference internal" href="../../topics/forms/modelforms.html#modelforms-selecting-fields"><span class="std std-ref">选择要使用的字段</span></a>。忽略任何要使用的字段定义将引发 <a class="reference internal" href="../exceptions.html#django.core.exceptions.ImproperlyConfigured" title="django.core.exceptions.ImproperlyConfigured"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ImproperlyConfigured</span></code></a> 异常。</p>
</dd></dl>

</div>
<div class="section" id="s-modelformset-factory">
<span id="modelformset-factory"></span><h2><code class="docutils literal notranslate"><span class="pre">modelformset_factory</span></code><a class="headerlink" href="#modelformset-factory" title="永久链接至标题">¶</a></h2>
<dl class="function">
<dt id="django.forms.models.modelformset_factory">
<code class="descname">modelformset_factory</code>(<em>model</em>, <em>form=ModelForm</em>, <em>formfield_callback=None</em>, <em>formset=BaseModelFormSet</em>, <em>extra=1</em>, <em>can_delete=False</em>, <em>can_order=False</em>, <em>max_num=None</em>, <em>fields=None</em>, <em>exclude=None</em>, <em>widgets=None</em>, <em>validate_max=False</em>, <em>localized_fields=None</em>, <em>labels=None</em>, <em>help_texts=None</em>, <em>error_messages=None</em>, <em>min_num=None</em>, <em>validate_min=False</em>, <em>field_classes=None</em>, <em>absolute_max=None</em>, <em>can_delete_extra=True</em>)<a class="headerlink" href="#django.forms.models.modelformset_factory" title="永久链接至目标">¶</a></dt>
<dd><p>返回给定 <code class="docutils literal notranslate"><span class="pre">model</span></code> 类的 <code class="docutils literal notranslate"><span class="pre">FormSet</span></code> 类。</p>
<p>参数 <code class="docutils literal notranslate"><span class="pre">model</span></code>、<code class="docutils literal notranslate"><span class="pre">form</span></code>、<code class="docutils literal notranslate"><span class="pre">fields</span></code>、<code class="docutils literal notranslate"><span class="pre">exclude</span></code>、<code class="docutils literal notranslate"><span class="pre">formfield_callback</span></code>、<code class="docutils literal notranslate"><span class="pre">widgets</span></code>、<code class="docutils literal notranslate"><span class="pre">localized_fields</span></code>、<code class="docutils literal notranslate"><span class="pre">labels</span></code>、<code class="docutils literal notranslate"><span class="pre">help_texts</span></code>、<code class="docutils literal notranslate"><span class="pre">error_messages</span></code>、<code class="docutils literal notranslate"><span class="pre">field_classes</span></code> 都传给 <a class="reference internal" href="#django.forms.models.modelform_factory" title="django.forms.models.modelform_factory"><code class="xref py py-func docutils literal notranslate"><span class="pre">modelform_factory()</span></code></a>。</p>
<p>Arguments <code class="docutils literal notranslate"><span class="pre">formset</span></code>, <code class="docutils literal notranslate"><span class="pre">extra</span></code>, <code class="docutils literal notranslate"><span class="pre">can_delete</span></code>, <code class="docutils literal notranslate"><span class="pre">can_order</span></code>,
<code class="docutils literal notranslate"><span class="pre">max_num</span></code>, <code class="docutils literal notranslate"><span class="pre">validate_max</span></code>, <code class="docutils literal notranslate"><span class="pre">min_num</span></code>, <code class="docutils literal notranslate"><span class="pre">validate_min</span></code>,
<code class="docutils literal notranslate"><span class="pre">absolute_max</span></code>, and <code class="docutils literal notranslate"><span class="pre">can_delete_extra</span></code> are passed through to
<a class="reference internal" href="formsets.html#django.forms.formsets.formset_factory" title="django.forms.formsets.formset_factory"><code class="xref py py-func docutils literal notranslate"><span class="pre">formset_factory()</span></code></a>. See <a class="reference internal" href="../../topics/forms/formsets.html"><span class="doc">formsets</span></a> for details.</p>
<p>见 <a class="reference internal" href="../../topics/forms/modelforms.html#model-formsets"><span class="std std-ref">模型表单集</span></a> 的用法示例。</p>
<div class="versionchanged">
<span class="title">Changed in Django 3.2:</span> <p>增加了 <code class="docutils literal notranslate"><span class="pre">absolute_max</span></code> 和 <code class="docutils literal notranslate"><span class="pre">can_delete_extra</span></code> 参数。</p>
</div>
</dd></dl>

</div>
<div class="section" id="s-inlineformset-factory">
<span id="inlineformset-factory"></span><h2><code class="docutils literal notranslate"><span class="pre">inlineformset_factory</span></code><a class="headerlink" href="#inlineformset-factory" title="永久链接至标题">¶</a></h2>
<dl class="function">
<dt id="django.forms.models.inlineformset_factory">
<code class="descname">inlineformset_factory</code>(<em>parent_model</em>, <em>model</em>, <em>form=ModelForm</em>, <em>formset=BaseInlineFormSet</em>, <em>fk_name=None</em>, <em>fields=None</em>, <em>exclude=None</em>, <em>extra=3</em>, <em>can_order=False</em>, <em>can_delete=True</em>, <em>max_num=None</em>, <em>formfield_callback=None</em>, <em>widgets=None</em>, <em>validate_max=False</em>, <em>localized_fields=None</em>, <em>labels=None</em>, <em>help_texts=None</em>, <em>error_messages=None</em>, <em>min_num=None</em>, <em>validate_min=False</em>, <em>field_classes=None</em>, <em>absolute_max=None</em>, <em>can_delete_extra=True</em>)<a class="headerlink" href="#django.forms.models.inlineformset_factory" title="永久链接至目标">¶</a></dt>
<dd><p>使用 <a class="reference internal" href="#django.forms.models.modelformset_factory" title="django.forms.models.modelformset_factory"><code class="xref py py-func docutils literal notranslate"><span class="pre">modelformset_factory()</span></code></a> 返回一个 <code class="docutils literal notranslate"><span class="pre">InlineFormSet</span></code>，默认值为 <code class="docutils literal notranslate"><span class="pre">formset=</span></code><a class="reference internal" href="../../topics/forms/modelforms.html#django.forms.models.BaseInlineFormSet" title="django.forms.models.BaseInlineFormSet"><code class="xref py py-class docutils literal notranslate"><span class="pre">BaseInlineFormSet</span></code></a>、<code class="docutils literal notranslate"><span class="pre">can_delete=True</span></code> 和 <code class="docutils literal notranslate"><span class="pre">extra=3</span></code>。</p>
<p>如果你的模型有多个 <a class="reference internal" href="../models/fields.html#django.db.models.ForeignKey" title="django.db.models.ForeignKey"><code class="xref py py-class docutils literal notranslate"><span class="pre">ForeignKey</span></code></a> 到 <code class="docutils literal notranslate"><span class="pre">parent_model</span></code>，你必须指定一个 <code class="docutils literal notranslate"><span class="pre">fk_name</span></code>。</p>
<p>参见 <a class="reference internal" href="../../topics/forms/modelforms.html#inline-formsets"><span class="std std-ref">内联表单集</span></a> 的用法示例。</p>
<div class="versionchanged">
<span class="title">Changed in Django 3.2:</span> <p>增加了 <code class="docutils literal notranslate"><span class="pre">absolute_max</span></code> 和 <code class="docutils literal notranslate"><span class="pre">can_delete_extra</span></code> 参数。</p>
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<li><a class="reference internal" href="#modelform-factory"><code class="docutils literal notranslate"><span class="pre">modelform_factory</span></code></a></li>
<li><a class="reference internal" href="#modelformset-factory"><code class="docutils literal notranslate"><span class="pre">modelformset_factory</span></code></a></li>
<li><a class="reference internal" href="#inlineformset-factory"><code class="docutils literal notranslate"><span class="pre">inlineformset_factory</span></code></a></li>
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